The **CMH322522-R68ML** is a surface-mount (SMD) wire-wound chip inductor. It is commonly used in electronic circuits for filtering, decoupling, and energy storage in high-frequency applications. --- ### 1. Technical Specification Breakdown The part number follows a standard industry naming convention. Here is the breakdown of its technical characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | The nominal inductance value (R68). | | **Tolerance** | ±20% | Indicated by the suffix 'M'. | | **Package Size** | 3225 (Metric) | 3.2mm x 2.5mm (approx. 1210 in Imperial). | | **Construction** | Wire-wound | Copper wire wrapped around a ferrite or ceramic core. | | **Mounting Type** | SMD / SMT | Surface Mount Technology for automated PCB assembly. | --- ### 2. Physical and Electrical Attributes * **Dimensions:** 3.2mm (Length) x 2.5mm (Width) x 2.2mm (Thickness). * **Core Material:** Typically Ferrite, providing high magnetic permeability and efficiency in power management. * **DC Resistance (DCR):** Usually very low, which minimizes power loss and heat generation. * **Self-Resonant Frequency (SRF):** This component is designed to operate effectively up to high frequencies before becoming capacitive. --- ### 3. Common Applications Due to its wire-wound construction and specific inductance value, the CMH322522-R68ML is typically found in: 1. **Power Supplies:** Used in DC-DC converters for voltage regulation. 2. **RF Circuits:** Acting as a choke to block high-frequency noise while allowing DC to pass. 3. **Consumer Electronics:** Found in smartphones, tablets, and laptops for power management modules. 4. **Signal Conditioning:** Used in LC filters to smooth out signal ripples. --- ### 4. Part Number Decoder If you are looking at similar parts, here is how to read the code: * **CMH:** Series prefix (Manufacturer specific, often denotes High Current or Standard series). * **322522:** Dimensions in mm (3.2 x 2.5 x 2.2). * **R68:** Resistance/Inductance value (R acts as a decimal point, so 0.68). * **M:** Tolerance code (M = ±20%, K = ±10%, J = ±5%). * **L:** Packaging code (usually refers to Embossed Tape & Reel).